2013-01-03 Thomas Quinot <quinot@adacore.com>

2013-01-03  Thomas Quinot  <quinot@adacore.com>

	* sem_ch7.adb, sem_ch10.adb, einfo.adb, einfo.ads, sem_ch12.adb,
	rtsfind.adb, sem_elab.adb, sem_ch4.adb, sem_ch8.adb
	(Einfo.Is_Visible_Child_Unit, Einfo.Set_Is_Visible_Child_Unit):
	Rename to Is_Visible_Lib_Unit, Set_Is_Visible_Lib_Unit, and
	update spec accordingly (now also applies to root library units).
	(Sem_Ch10.Analyze_Subunit.Analyze_Subunit_Context): Toggle above flag
	on root library units, not only child units.
	(Sem_Ch10.Install[_Limited]_Withed_Unit): Same.
	(Sem_Ch10.Remove_Unit_From_Visibility): Reset Is_Visible_Lib_Unit
	even for root library units.
	(Sem_Ch8.Find_Expanded_Name): A selected component form whose prefix is
	Standard is an expanded name for a root library unit.

2013-01-03  Thomas Quinot  <quinot@adacore.com>

	* exp_ch3.adb: Minor reformatting.

2013-01-03  Olivier Hainque  <hainque@adacore.com>

	* tracebak.c: Reinstate changes to support ppc-lynx178.

2013-01-03  Ed Schonberg  <schonberg@adacore.com>

	* atree.ads: Minor reformatting and documentation enhancement.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@194845 138bc75d-0d04-0410-961f-82ee72b054a4